Protective yellow 74172 helmet made of high density polyethylene with basic comfort • shell material: HDPE • size adjustment: pinlock latch (55-66 cm) • six-point harness made entirely of plastic • snapper and chin strap attached directly to the helmet Protective helmet 74172 meets the requirements of EN 397:2012 + A 1:2012 white helmet - site manager, construction engineer, superintendent, other engineers (e g environment); yellow helmet - blue worker; red helmet - visitor, trainee, apprentice; blue helmet - working at heights, machine operator, electrician, power engineer; green helmet - occupational health and safety worker; orange helmet - surveyor; black helmet - architect, author's superintendent Respectively, the helmet is designed to meet the requirements of EN 397:2012 + A 1:2012.